Lenzburg

County:: St. Clair County
County Seat:: No
Area (mi²):: 1.155
State:: Illinois

Lenzburg is a village located in St. Clair County, Illinois. Lenzburg has a 2025 population of 440. Lenzburg is currently declining at a rate of -1.12% annually and its population has decreased by -5.78% since the most recent census, which recorded a population of 467 in 2020.

The average household income in Lenzburg is $66,290 with a poverty rate of 17.03%. The median age in Lenzburg is 32 years: 32.3 years for males, and 31.8 years for females.

Demographics

The racial composition of Lenzburg includes 96.49% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	495	96.49%
Two or more races	17	3.31%
Black or African American	1	0.19%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Lenzburg Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lenzburg's average per capita income is $38,929. Household income levels show a median of $44,722. The poverty rate stands at 17.03%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$80,536	-
Families	$66,250	$80,311
Households	$44,722	$66,290
Non Families	$35,114	$41,430

$38,929

Average Income

$44,722

Median Household Income

17.03%

Poverty Rate